Stepwise balancing involves stepping down the airflow to the outlets with the greatest amount of excess air.
Answer the following statement true (T) or false (F)
True
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The need for breakaway connections on ducts connected to fire damper sleeves is based on the _____.
a. thickness of the wall b. metal gauge of the sleeve c. size of the damper d. volume of airflow
Technician A says that the vibration damper is removed with a puller that grasps the damper's outer ring. Technician B says that when an air impact wrench is used on a puller to remove the vibration damper, the crankshaft need not be kept from turning. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
Gloves should be worn a little too tight.
Answer the following statement true (T) or false (F)
Most analog addressable systems operate on a _____.
a. one-conductor circuit b. two-conductor circuit c. three-conductor circuit d. four-conductor circuit